Firstly, the reasons of DC magnetic bias on transformer are studied.
首先，本文介绍了产生变压器直流偏磁的原因。
Researches indicate that negative peak value of the output voltage of the testing winding is linear with the positive DC magnetic biasing potential;
研究得出，当磁芯中存在正偏磁时，检测绕组输出端电压的负峰值与直流偏磁磁势是线性关系；
Since HSY requires dc magnetic field, an exciter with control circuitry is needed in addition to the conventional PMSY drive unit when employed as a motor.
HSY作为电动机使用时，由于需要直流磁场，与普通pmsy的驱动单元相比，应额外增加一个励磁电路。
At last, the temperature-rise of transformer is calculated using the temperature field method and the influence on DC magnetic bias to temperature-rise is analyzed.
最后，采用温度场分析方法对变压器在不同直流偏磁量下的温升进行求解，并分析了直流偏磁对变压器温升的影响。
According to the analysis results, the permission criteria of transformer DC magnetic bias is discussed and supplies reference for engineering practice and theoretical research.
最终通过以上结果的分析初步探讨了本文所计算的变压器允许直流偏磁的准则，为工程实践和进一步的理论研究提供了参考。
The phenomenon of DC magnetic bias analysis and electromagnetic field calculating are combined in this paper and the running performance is simulated with different magnetic bias DC.
本文将直流偏磁现象与电磁场计算有机地结合在一起，对变压器在不同直流偏磁下的运行性能做了仿真和分析。
Man-made static magnetic fields are generated wherever DC currents are used, such as in electric trains or industrial processes such as aluminium production and in gas welding.
在使用直流电的地方即产生人为的静电磁场，例如在电车或诸如铝生产和气焊等工业操作程序中。
However, to take full advantage of the expensive rare earth magnets, simply replacing the alnico magnets by rare earth ones in traditional magnetic structures of dc torque motors is not adequate.
然而，为了充分利用昂贵的稀土永磁体，在直流力矩电动机的传统磁结构中，直接用稀土永磁体取代铝镍钴磁钢是不适宜的。
A new type of DC current comparator is researched which includes two parts: a bidirectional self saturating magnetic amplifier and a two care self saturating magnetic amplifier.
研究了一种新型直流电流比较仪，它包括两个环节：双向自饱和磁放大器和双铁芯自饱和磁放大器。
The supply power of copper vapor laser (CVL) consisting of DC high voltage circuit, pulse discharge circuit and one stage magnetic pulse compression circuit is introduced here.
文中介绍了由直流高压电路、脉冲放电电路和一级脉冲磁压缩电路组成的铜蒸气激光器电源。
Variable magnetic pole DC motor can resolve the problem of commutator existing in the traditional DC motor.
变磁极性直流电机解决了传统直流电机的换向器问题。
Furthermore, the GMI effect is enhanced and magnetic sensibility is improved by current annealing, deposition with dc current and adjusting the driving current amplitudes.
并通过电流退火，电流化学镀和调节驱动电流幅值来增强复合丝的GMI效应和磁场灵敏度。
This paper puts forward magnetic balanced inspection method, and designs DC earthing inspection system based on magnetic balanced method.
本文提出了磁平衡监测方法，设计了基于磁平衡法的直流接地监测系统。
With the power being DC, the current of inner winding of the magneto is AC, and the rotating part is just similar to the magnetic rotor of synchronous dynamo.
无刷直流永磁电机的电源虽是直流电，但其内部绕组中的电流仍是交流电，其旋转部分犹如同步电机的磁极转子，其结构及电磁原理与同步电机相似。
Then, in chapter 4 of this thesis, the reliability analysis on the DC sensor based on magnetic potential self-balance and feedback compensation is processed.
然后，本文在第四章对磁势自平衡回馈补偿式直流传感器进行了可靠性分析。
The DC sensor based on magnetic potential self-balance and feed-back compensation is brought forward based on the research of basic principles about traditional DC transformer and magnetic magnifier.
磁势自平衡回馈补偿式直流传感器是在传统直流互感器、双向磁放大器基本原理的基础上设计出的一种新型的直流大电流传感器。
This invention discloses an assembly method of aluminum electrolytic rectifier DC bus-bar, especially to an indoor aluminum electrolytic rectifier DC bus-bar magnetic vortex defend solving method.
本发明公开了一种铝电解整流所直流支母线的配置方法，特别是涉及一种户内式铝电解整流所直流支母线防磁涡流的解决方法。
In many power electronic applications ferrite cores of magnetic components are biased with a DC or low-frequency premagnetization.
在电力电子技术中应用的铁氧体铁心磁性元件，其铁心中往往存在直流或低频交流预磁化的情况。
The paper introduced some debugging problems and solving methods according to DC speed regulating system of reversible magnetic field and logical control without circular current.
针对磁场可逆的逻辑无环流直流调速系统，介绍了调试过程中出现的一些问题及处理方法。
MHD propulsion types are classified into the AC MHD propulsion and the DC MHD propulsion by supplied magnetic field.
根据外加磁场特性的不同，磁流体推进可分为直流和交流两种方式。
The detection circuit has a major influence on the accuracy and sensitivity of DC sensor based on magnetic potential self-balance and feedback compensation.
在磁势自平衡回馈补偿式直流传感器中，检测补偿回路对系统的精度有很大影响。
It can not only measure DC current magnetic field but also alternative current magnetic field. This system has small volume, high capability, and wide frequency range.
本智能磁场测量系统既适合测量直流磁场，又可测量交变磁场，且体积小，性能高，适用频率范围宽。
It stores electric energy in the magnetic filed generated by DC current flowing through a coiled wire.
直流电流流过一绕结线圈，将电能储存于磁场中。
We find that the permeability and the resonance frequency can be adjusted by the DC bias magnetic field, and the bistable characteristic arises under certain conditions.
我们发现磁导率及其共振频率均可以通过直流偏置磁场进行调节，并且在一定条件下出现双稳特性。
Regardless of DC or AC magnetic field, the hard phase in weld metal overlay is fine and distributed "the hexagon" in optimum parameters, then hardness and wear extent in weld metal overlay are higher.
在最佳的磁场参数作用下，无论是直流磁场还是交流磁场，堆焊层中硬质相细小且成“六角形”分布，此时堆焊层金属的硬度和磨损量均达到最佳状态。
With the variations in the DC supply voltage, it is easy to alternate the input DC voltage of the converter and control the rotating speed of stator's magnetic flux.
通过直流电源电压的变化，可以方便地调节定子磁链的旋转速度。
The magnetic field of a low-inertia REPM DC servo motor with ferrite shielding case was calculated by the finite element method.
本文采用有限元法对带铁氧体屏蔽罩的稀土永磁低惯量直流伺服电动机的磁场进行了计算。
Because of the emphases research of magnetic bearing at home and abroad is DC active magnetic bearings (AMBs) at present, and the cost of DC power amplifiers is much higher than ac power converters.
目前国内外对磁轴承的研究多为直流式磁轴承，而直流开关功率放大器相对于交流逆变器来说其体积大、功耗大及成本高。
This article presents a design of permanent magnetic brushless DC motor control system and mainly involves the hardware circuit design of speed closed loop and power module drive.
介绍了一种永磁无刷直流电机控制系统的设计方案，主要涉及速度闭环和功率模块驱动的硬件电路设计；并通过实验证明该设计可直接用于小型无刷直流电机的控制。
Inspired by the force action caused by magnetic field to current carrying conductor and Newton's third law, we tried to make a new type of DC motor, yet we failed.
受磁场对载流导线有力的作用和牛顿第三定律的启发，希望制造一种新型的直流电动机。然而失败了。
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